Commit 868d172b authored by Eric Cooper's avatar Eric Cooper Committed by Nicolas Pitre
Browse files

[ARM] add machine-specific hook to machine_kexec 



Provide the option to call a machine-specific function
before kexec'ing a new kernel.

Signed-off-by: default avatarEric Cooper <ecc@cmu.edu>
Signed-off-by: default avatarNicolas Pitre <nico@fluxnic.net>
parent e25bac96

arch/arm/include/asm/kexec.h

+3 −0
Original line number Diff line number Diff line
@@ -50,6 +50,9 @@ static inline void crash_setup_regs(struct pt_regs *newregs, 
	}

}



/* Function pointer to optional machine-specific reinitialization */

extern void (*kexec_reinit)(void);



#endif /* __ASSEMBLY__ */



#endif /* CONFIG_KEXEC */

arch/arm/kernel/machine_kexec.c

+7 −0
Original line number Diff line number Diff line
@@ -75,6 +75,11 @@ void machine_crash_shutdown(struct pt_regs *regs) 
	printk(KERN_INFO "Loading crashdump kernel...\n");

}



/*

 * Function pointer to optional machine-specific reinitialization

 */

void (*kexec_reinit)(void);



void machine_kexec(struct kimage *image)

{

	unsigned long page_list;
@@ -104,6 +109,8 @@ void machine_kexec(struct kimage *image) 
			   (unsigned long) reboot_code_buffer + KEXEC_CONTROL_PAGE_SIZE);

	printk(KERN_INFO "Bye!\n");



	if (kexec_reinit)

		kexec_reinit();

	local_irq_disable();

	local_fiq_disable();

	setup_mm_for_reboot(0); /* mode is not used, so just pass 0*/

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